Invisible hinge.



-H. R; GANFlELD.

INVISIBLE HINGE.

APPLICATION FILED MAR. 31. 1909. n

Patented Nov. 30, 3.909.

W/MESSES:

HARRY R. CANFIE'LD, 0F NEW YORK, N.

Y., ASSIGNOR, BY MESNLG ASSIGNMENTS, TO

FREDA GOSS., NEW YORK. N.` Y.

INVISIBLE HINGE.

einem.

Specica'tion of Letters Patent.

Painted Nov. 30., 1909.

Application filed March 31., 1909. Serial No. SZOOSL To all whom 'it mayconcern:

Be it known that I, HARRY R. .CANr1si.D, a citizen of the United States,and residing at New York, in the c ounty of New` York and State of NewYork, have invented cer'- tain new and useful Improvements in InvisibleHinges, of which the following is a specification, such as will enablethose skilled in the art to which it appertains to make and use thesame. Y

This invention relates to what are known as invisible hinges; and theobjectI thereof is to provide an improved device of this class designedfor use in connection with doors, gates, sashes or the like, and alsopiano and organ constructions and in cabinet work of various kinds andclasses; and with this and other objects in View the invention consistsin a hinge of the class specified constructed as hereinafter describedand claimed.

The invention is fully disclosed in the following specification, ofwhich the accompanying drawing forms a part, in which the separate partsof my improvement are designated by suitable reference characters ineach of the views, and in which 3 Figure l is a side view of a hingemade according to my invention and` looking in the direction of thearrow a: of Fig. 3, Fig. 2 a section of the hinge on Fig. 1 and showingthe hinge applied to a door frame and door, and showing the door i in aclosed position, Fig. 3 a view similar to Fig. Q-butshowing the dooropen, Fig. 4 a view similar to Fig. i but showing only part of the-hingeand showing a modification, Fig. 5 a partial transverse section on theline 5--5 of Fig. 4, Fig. 6 a section on the line 6 6 of Fig. 1 butshowin a modification and showing the hinge app ied to adoor and doorframe, and showing the door in a closed position, and ;-Fig. 7 a viewsimilar to Fig. 6 but showing'the door open.

In the drawing forming part or" this specication, l have shown at fapart of a door frame and at d5 a partvof adoor.2 and inthe practice ofmy invention provide a hinge comprising two similar ,Imam plates orleaves a and b which are preferably formed by folding asheet of steel orother metal longitudinally, and these plates or leaves are plate cl witha transversely ranging arm vwith the main hinge plates knuckles (Z2 ofthe supplemcnta chambers f2 and.' d6

provided with knuckles a2 and2 respee tively.'

l. also provide two supplement-al. hinge plates c and (l, and thesehinge plates c and d are pro vided at their oppositeedges with knucklesc2 and d2 respectively clearly shown in Fig. 1., and the supplementalhinge plate c is provided with a transversely rang ing arm o, and thesupplemental hinge 113. and the main hinge plates or leaves a and areprovided with transversely. ranging recesses a3 and b3 adapted toreceive the arms Z3 and c of the supplemental hinge plates c and d.. Thesupplemental hinge plates'c and fl are connected by a pintle Vpin epassed through the knuckles c2 and Z2 at one edge thereof, and the saidsupplemental hinge plates c and (l are connected respectively l) bypintie pins f3 and g as shown in Fig.

l, one of said pintle pins being passed' through the knuckles oi theplate or leai2 c and thecorresponding knuckles of the sup plementalhinge plate o, and the other being passed through the knuckles b2 of themain hinge plate or leaf Z) and the corres ending l) hinge plate al.

When the parts of the hinge are connected inthe manner described and asshown in Fig. 1, the arms c and di of the mental hinge plates c and elenter and will swing in the transverse recesses b3 and a3 in. the inneror adjacent side edges of the plates or leaves (L and l), and said armsc? and (Z3 are slotted longitudinally as shown at c* and nl* in Figs.and A3, and passed through the lower end portion of the main hinge plateor leaf o: and the upper end portion or' the main hinge plate or leaiz bare pins /t and i which pass through the slots (Z4 and c* in the arms aland e. ln practice themainhinge plates a and Z are secured inf` theframe f ofthe door d5 `or leaves a and supple and in the door d5 asshown in Figs. 2 and 3, Y

and said plates o r leaves are counter sunk in the frame and door asclearly shown in said ig'ures, and-*the said #frame and door are alsoprovided respectivelyv with recesses or adapted to receive the land dooras clearly shown in Fig. 2, and the said door may be swung through anarc 0i one hundred-and eighty degrees as shown in Fig. 8, and in themovement of opening the door it is swung clear of the door frame so asto avoid any moldings or ornamental work with which saidvdoor frame maybe.

provided, this operation being clearly indicated in Fig. 3.

With `this construction the door must be opened and closed by hand, butin Figs. 4 and 5 I have shown means whereby the door may beautomatically closed and held in the closed position, In order toaccomplish this result I provide a spring j which is wound on thecentral pin or pintle e, and which is provided with twoarins and j3which are wound around or partially around the pintle pins f3 and g, andthis spring is preferably placed centrally of the hinge, but may beplaced in any desired position and a number of said springs may beprovided if desired, and in order to accommodate the sameV theli'nuckles'of the plates or leaves a and b and ot the supplemental hingeplates o and d are shortened.

In Figs. 6 and 7 I have shown a modificatiorl of this springconstruction, in which I place either in the door frame or door, in

the door frame as shown in the drawing, and in the recess or chamber f2therein a spiral spring 7c, and the arm cl3 of the supplemental hingeplate d is connected by means of a link 7a2 with a disk or plate /03 onwhich one end ot' said spring bears, the

. other end thereof bearing on the main hinge plate or leaf ,and thespring c will operate as will be readily understood to close the door Z5and hold it iiia closed position.

It will be understood, of course, that if the spring /a is used in thedoor instead of being used in the door frame, the said spring will beplaced in the chamber or recess d and will he'connected with the arm o3of the supplemental hinge plate c, and said spring device may be usedboth' in the door l? and door i'raiue f if" desired.

It will be observed that the knuckles a,2 and b2 on the plates or leavesa and b are ofset at one side of said plates or leaves so that thecenters of said knuckles are not in the central planes of said plates orleaves, and it will also be observed that the arms 03l and el of thesupplemental hinge plates c and Z are wider where the pintle or pin cpasses therethrough than at the opposite ends, and the longitudinalslots c and d4 in said aimsY are curved inwardly of the pivotal supportorl connection formed by the said pintle c, and this constructionenables the separate parts of the hinge to` fold together as shown inFig. and also facilitates the movement of said parts in the beginning ofthe opera tion of opening the door.

' lt will be understood that my improved hinge may he made of anydesired strength, and the arms c3 and dlvof the supplemental hingeplates c and d may also be made of much greater relative dimensions orstrength than herein shown and described if found necessary. I

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. A hinge composed of two main lates or leaves and supplemental plateshinged thereto and to each other, said supplemental plates beingprovided with arms which enter transverse recesses in the main hingeplates or leaves and which are provided with ongitudinal slots, and saidmain hinge plates or leaves being provided with stationary pins whichpass through said slots.

2. A hinge composed of two main plates or leaves provided at one edewith knuckles, supplemental plates provi ed at one edge with knuckles,said main lplates or leaves and said supplemental plates being connectedby intles passing through said knuckles, and) said supplemental platesbein also provided at their opposite edges witg knuckles and beingconnected by a pintle passing therethrough, said main plates or leavesbeing provided with transverse recesses, and said supplemental plateswith arms movable in said recesses and provided with longitudinal slots,and said main plates or leaves being provided with stationary pins whichpass through said slots.

3. A hinge composed of two main plates or leaves and supplemental plateshinged thereto and to each other, said supplemental plates beingprovided with arms which enter transverse recesses in the main hingelates or leaves and which are provided with Pongitudinal slots, saidmain l'iinge plates or leaves being provided with @stationary pins whichpass through said slots, and a spring devicefor holding the parts of thehinge in a closed position. a

4. A door provided with :a hinge com posed of two main plates oi' leavesand supplemental plates hinged thereto and tq cach other, saidsupplemental plates being provided with arms which enter transverserecesses in the main hinge plates or leaves and which are-provided withlongitudinal slots,l and said main hinge plates or leaves being providedwith stationary pins which pass through said slots, said main plates orleaves being securedA in the door frame' and door, my inventionY I havesigned my name in :ma said door frame and door being propresence of theSubscribing Witnesses'this vided with recesses adapted to receive the30th day of March, 1909. movable parte` of the hinge, land a springHARRY R. CANFIELD. connected with the Vhinge for holding the Witnesses:door in a closed osition. M. E. DooDYl.'

In testimony t at I claim the foregoing as C. E. MULREANY.

